<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- 万国码 -->
    <meta charset="utf-8" />
    
    <!-- %PUBLIC_URL%/ 代表public文件夹路径，只有React脚手架才会有 -->
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />

    <!-- 开启理想视口，一般移动端网页会加上 -->
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <!-- 更改手机浏览器的地址栏颜色（仅仅支持原生Android系统浏览器） -->
    <meta name="theme-color" content="#000000" />

    <!-- 网页说明，网页爬虫、搜索引擎搜索结果下方描述可用 -->
    <meta
      name="description"
      content="Web site created using create-react-app"
    />

    <!-- ios系统网页添加到桌面后的图标 -->
    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />

    <!--
      用于应用加壳
      manifest.json provides metadata used when your web app is installed on a
      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
    -->
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />

    <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
    <title>React App</title>
  </head>
  <body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
  </body>
</html>
